What is Posteo?
Posteo is a paid email service from Berlin that has charged €1 a month since 2009, with no free tier, no pricing tiers and no trial account. The account includes 4 GB of mail storage, calendars, an address book and notes, and it can be opened without giving any personal details. Posteo runs on green energy, shows no ads and lets users encrypt everything they store, but it does not support custom domains.
Posteo is a paid product, starting at €1 per month, prepaid (minimum top-up €12). See every plan
Good for
- People who want a low-cost, ad-free mailbox they pay for directly
- Signing up without handing over a name, address or phone number
- Buyers who care about green energy and a company financed only by its users
Worth knowing
- Custom domains are not supported; addresses use Posteo's own domains such as posteo.de, posteo.net or posteo.com.
- There is no free plan and no trial account, though credit is refunded in full if you cancel within the first month.
- Payment is prepaid in euros, with a minimum top-up of €12, which is about one year's fees.
- It is used through webmail and a web app or through other mail apps over IMAP or POP3, and it offers no cloud storage.
Key features
- One flat-priced account
- €1 a month covers email with 4 GB of storage, 3 aliases, 3 calendars, an address book and notes. Storage can grow to 75 GB and aliases to 25 for small monthly add-on fees.
- Encryption of stored data
- Crypto mail storage encrypts saved email, attachments, metadata and notes, and the address book and calendar can each be encrypted with your own password at the press of a button.
- End-to-end encryption in webmail
- PGP through the Mailvelope plug-in and S/MIME through Posteo's own plug-in work inside the webmail interface, and incoming mail can be encrypted with either.
- Sign-up without personal details
- Registration asks for no name or address, payment data is kept separate from email accounts, and credit can be added by bank transfer, PayPal, credit card or cash.
- Calendar, contacts and notes
- Calendars sync over CalDAV and can be shared read-only by ICS link, contacts sync over CardDAV, and notes can be synchronized with Apple Notes.
- Passkeys and login protection
- Login supports two-factor authentication (TOTP), up to 5 passkeys and up to 5 app passwords. An extra protection mode blocks access from external programs over IMAP.
Posteo pricing
- Starts at
- €1 per month, prepaid (minimum top-up €12)
- Free plan
- None
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Email account | €1per month, prepaid from account credit | 4 GB of storage, 3 aliases, 3 calendars, address book and notes. Extra storage costs €0.25 per GB a month and extra aliases or calendars €0.10 each. |
Read from posteo.de on Oct 6, 2026. Prices change, so confirm with Posteo before you buy.
Works with
- Mailvelope
- Apple Notes
- Thunderbird
- Outlook
Posteo alternatives
- Posteo vs mailbox
Free trial · from €1/mo
- Posteo vs Tuta Mail
Free plan · from €3/mo
- Posteo vs Proton Mail
Free plan · from $3.99/mo
- Posteo vs StartMail
Free trial · from $4.99/mo
- Posteo vs Mailfence
Free plan · from €2.50/mo
Common questions
Is Posteo free?
No. Posteo is a paid product, starting at €1 per month, prepaid (minimum top-up €12).
How much does Posteo cost?
Posteo lists one plan. Email account: €1 per month, prepaid from account credit. Prices were read from posteo.de on Oct 6, 2026.
What platforms does Posteo work on?
Posteo is available on Web.
Does Posteo have an Android app?
No Android app was listed when its pages were read on Oct 6, 2026. Posteo is listed for Web.
Does Posteo have an iPhone app?
No iPhone app was listed when its pages were read on Oct 6, 2026. Posteo is listed for Web.
Is Posteo open source?
Yes. Posteo is open source, according to its own site.
Is Posteo end-to-end encrypted?
Posteo describes itself as end-to-end encrypted on its own site. Nobody here has audited that.
What does Posteo integrate with?
Posteo's listing names Mailvelope, Apple Notes, Thunderbird and Outlook. A listing names up to eight integrations, so it may connect to more.
Who makes Posteo?
Posteo is made by Posteo e.K. It dates from 2009.
What are the alternatives to Posteo?
The closest alternatives to Posteo in our directory are mailbox, Tuta Mail, Proton Mail, StartMail and Mailfence. Each one has a side-by-side comparison with Posteo.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 6, 2026.